Definition of "coolest" []

• Superlative form of cool: most cool. (adjective)

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• "The prize for the person who ranks highest for the term coolest guy on the internet will win an unknown prize, that according to Kim, "Will be worth it!""
• "Anyone who doesn't know we're the coolest is a whiny baby?"
• "KANSAS CITY | Westar Energy Inc. lowered its full-year earnings Wednesday, blaming what it called the coolest summer in more than 40 years."